|
This article lists and discusses the usage and derivation of names of large numbers, together with their possible extensions. The following table lists those names of large numbers which are found in many English dictionaries and thus have a special claim to being "real words". The "Traditional British" values shown are unused in American English and are becoming rare in British English, but their other-language variants are dominant in many non-English-speaking areas, including continental Europe and Spanish-speaking countries in Latin America; see Long and short scales. English also has many words, such as "zillion", used informally to mean large but unspecified amounts; see indefinite and fictitious numbers. ==Standard dictionary numbers== Apart from ''million'', the words in this list ending with -''illion'' are all derived by adding prefixes (''bi''-, ''tri''-, etc., derived from Latin) to the stem -''illion''.〔p. 316, ''The History of the English Language'', Oliver Farrar Emerson, New York, London: Macmillan and Co., 1894.〕 ''Centillion''〔(Entry for ''centillion'' in the ''American Heritage Dictionary'' )〕 appears to be the highest name ending in -"illion" that is included in these dictionaries. ''Trigintillion'', often cited as a word in discussions of names of large numbers, is not included in any of them, nor are any of the names that can easily be created by extending the naming pattern (''unvigintillion'', ''duovigintillion'', ''duoquinquagintillion'', etc.). All of the dictionaries included ''googol'' and ''googolplex'', generally crediting it to the Kasner and Newman book and to Kasner's nephew. None include any higher names in the googol family (googolduplex, etc.). The ''Oxford English Dictionary'' comments that ''googol'' and ''googolplex'' are "not in formal mathematical use". 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Names of large numbers」の詳細全文を読む スポンサード リンク
|